Evaluation of gas-reburning and low NO{sub x} burners on a wall fired boiler. Progress report No. 18, January 1--March 31, 1995

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The primary objective of this project is to evaluate the use of Gas Reburning and Low NO{sub x} Burners (GR-LNB) for NO{sub x} emission control from a wall fired boiler. It is anticipated that, if the demonstration is successful, the GR-LNB technology could become commercialized during the 1990`s and will be capable of (1) achieving significant reduction in the emissions of nitrogen oxides and sulfur dioxide (another acid rain precursor) from existing facilities to minimize environmental impacts such as transboundary and interstate pollution and/or (2) providing for future energy needs in an environmentally acceptable manner. Low NO{sub x} burners are ... continued below

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15 p.

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Creator: Unknown. May 16, 1995.

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Description

The primary objective of this project is to evaluate the use of Gas Reburning and Low NO{sub x} Burners (GR-LNB) for NO{sub x} emission control from a wall fired boiler. It is anticipated that, if the demonstration is successful, the GR-LNB technology could become commercialized during the 1990`s and will be capable of (1) achieving significant reduction in the emissions of nitrogen oxides and sulfur dioxide (another acid rain precursor) from existing facilities to minimize environmental impacts such as transboundary and interstate pollution and/or (2) providing for future energy needs in an environmentally acceptable manner. Low NO{sub x} burners are designed to delay the mixing of the coal fuel with combustion air to minimize the NO{sub x} formation. Typically, one may obtain up to 50% reduction in NO{sub x} emissions through the use of LNB. For LNB applications, the technology is developed and a number of LNB designs are commercially available. With GR, about 80--85 percent of the coal fuel is fired in the main combustion zone. The balance of the fuel is added downstream as natural gas to create a slightly fuel rich environment in which NO{sub x} is converted to N{sub 2}. The combustion process is completed by over-fire air addition. SO{sub x} emissions are reduced to the extent that natural gas replaces sulfur-containing coal. The level of NO{sub x} reduction achievable with 15--20% natural gas is on the order of 50--60%. Thus the emission reduction target of the combination of these two developed technologies is about 70%.

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15 p.

Notes

OSTI as DE95017329

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  • Other Information: PBD: 16 May 1995

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  • Other: DE95017329
  • Report No.: DOE/PC/90547--T18
  • Grant Number: FC22-91PC90547
  • DOI: 10.2172/102486 | External Link
  • Office of Scientific & Technical Information Report Number: 102486
  • Archival Resource Key: ark:/67531/metadc622511

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  • May 16, 1995

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  • June 16, 2015, 7:43 a.m.

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  • June 27, 2016, 1:23 p.m.

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Evaluation of gas-reburning and low NO{sub x} burners on a wall fired boiler. Progress report No. 18, January 1--March 31, 1995, report, May 16, 1995; United States. (digital.library.unt.edu/ark:/67531/metadc622511/: accessed June 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.